St. Louis to Chicago (STL-ORD): nonstop upgrade & award space

United Airlines and American Airlines fly nonstop between St. Louis (STL) and Chicago (ORD), roughly 165 times a week. With United Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. 2LNR tracks confirmed upgrade and award space on American Airlines, on every STL to ORD departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

See STL to ORD on the interactive map Get started free
165
Nonstop flights a week
258 mi
Nonstop distance
Free
To get started

St. Louis to Chicago flight schedule

Scheduled nonstop departures for STL to ORD, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from St. Louis (STL) to Chicago (ORD)
Date Flight Airline Departs STL Arrives ORD Duration Aircraft
AA 1926American Airlines05:0006:291h 29m738
UA 4423United Airlines06:0007:331h 33mCR5
UA 4570United Airlines07:2509:011h 36mCR5
AA 1997American Airlines07:2608:591h 33m319
UA 2749United Airlines08:0009:341h 34m319
UA 567United Airlines08:0009:341h 34m319
UA 4601United Airlines08:3010:051h 35mCR5
UA 4808United Airlines09:3011:001h 30mE7W
UA 4395United Airlines09:4311:191h 36mCR5
UA 4517United Airlines10:5312:281h 35mCR5
AA 2818American Airlines11:0112:291h 28m319
UA 2654United Airlines12:5914:301h 31m73G
UA 2779United Airlines12:5914:301h 31m738
UA 1382United Airlines13:1314:431h 30m7M8
AA 6352American Airlines13:2514:591h 34mCR7
AA 6355American Airlines13:4915:301h 41mCR7
UA 4452United Airlines15:2217:001h 38mCR5
UA 4500United Airlines15:3217:051h 33mCR5
AA 4259American Airlines16:5018:291h 39mE75
AA 4645American Airlines17:1819:131h 55mE75
UA 541United Airlines17:3019:011h 31m320
UA 4616United Airlines18:5320:291h 36mCR5
AA 3570American Airlines20:0721:401h 33mE70
AA 1926American Airlines05:0006:291h 29m738
UA 4423United Airlines06:0007:331h 33mCR5
UA 4570United Airlines07:2509:011h 36mCR5
AA 1997American Airlines07:2709:051h 38m738
UA 2749United Airlines08:0009:341h 34m73G
UA 567United Airlines08:0009:341h 34m319
UA 4601United Airlines08:3010:051h 35mCR5
UA 4808United Airlines09:3011:001h 30mE7W
UA 4395United Airlines09:4011:161h 36mCR5
UA 4517United Airlines10:5312:281h 35mCR5
AA 2818American Airlines11:0112:291h 28m319
UA 2654United Airlines12:5914:301h 31m73G
UA 2779United Airlines12:5914:301h 31m738
UA 1382United Airlines13:1314:431h 30m7M8
AA 6352American Airlines13:2514:591h 34mCR7
AA 6355American Airlines13:4915:301h 41mCR7
UA 4452United Airlines15:2217:001h 38mCR5

Showing the first 40 of 153 scheduled STL to ORD departures across the next 7 days with service. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every STL to ORD date on the interactive map

Confirmed upgrade & award space on STL to ORD departures

2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for St. Louis to Chicago to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each STL to ORD departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See STL to ORD on the interactive route map, with schedules, connections, and route statistics.

Airlines flying St. Louis to Chicago nonstop

Carriers operating STL to ORD nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See STL to ORD on the interactive map →

Frequently asked questions about STL to ORD

How far is Chicago from St. Louis?
STL to ORD covers about 258 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from STL to ORD?
United Airlines and American Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from STL to ORD?
About 165 nonstop flights a week run between St. Louis and Chicago in the current schedule, operated by United Airlines and American Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from STL to ORD depart?
Scheduled STL to ORD nonstops in the next 7 days with service leave between 05:00 and 20:07, local time at St. Louis. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on STL to ORD?
Open the STL to ORD route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss STL to ORD upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free